As you can tell from my other reviews, there are a lot of companies I dislike. However, I hope there is a special place in hell for Logi. I cannot describe how much I hate this company.The annoying thing is that the hardware on their products is actually really good - so good that there is really nothing else that comes close for keyboard and mice.The downside is that the products are so utterly terrible - the software is awful and full of glitches, and the devices themselves stop working, sometimes in a matter of days or weeks after purchase. I have bought 3 mice (each one costing well over $100) and each one has had massive problems within the first two months of use. It is an utter disgrace. The support is so terrible it will make you want to kill yourself - all they do is copy and paste the same instructions telling to to reinstall everything, which never works.